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Old 6th April 2012, 07:16 AM   #1061
Tytte71 is offline Tytte71  Norway
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Quote:
Originally Posted by jzagaja View Post
This year Autotech @ Munich can play music I won't be there, it's time for a brake from audio With a wide bandwidth 2" drivers JMLC-350 or EJMLC-300 are suitable.
Hope you are speaking of just a holliday and not a long break Jazagaja...

I have the JMLC350 playing now with a Radian 951 Be driver. With this horn/driver combo anything below 800Hz is not recommended.
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Old 6th April 2012, 11:05 AM   #1062
jzagaja is offline jzagaja  Poland
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Quote:
Originally Posted by _Wim_ View Post
I am also working on an automated rotary table (nearly finished).
This is a real thing, keep us informed.

Quote:
I have the JMLC350 playing now with a Radian 951 Be driver. With this horn/driver combo anything below 800Hz is not recommended.
Supertweeter still needed?
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Old 6th April 2012, 11:46 AM   #1063
jzagaja is offline jzagaja  Poland
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New drivers from BC.
Attached Files
File Type: pdf DE90TN preliminary.pdf (121.8 KB, 102 views)
File Type: pdf DE980TN preliminary.pdf (123.4 KB, 62 views)
File Type: pdf DE1080TN preliminary.pdf (125.2 KB, 96 views)
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Old 6th April 2012, 06:55 PM   #1064
Tytte71 is offline Tytte71  Norway
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Hard to tell Jacek, I have to do some more distortion and time domain measurement in order to conclude. No question that the high mid / tweeter performance is good. The in-room sweet spot measurements looks very promising... the horns are pointing some 10degrees off sweet spot axis.
After 2 days of testing with Audiolense I have landed on a cross over frequency of 1kHz, which is higher than I hoped for (15" FaitalPro FX560 in BR cabinet). Later I will do some testing of the horn with cardioid midbasses.
Attached Images
File Type: png JMLC350 + Radian951PB Be.png (40.9 KB, 523 views)
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Old 11th April 2012, 07:22 AM   #1065
jzagaja is offline jzagaja  Poland
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Universe Art Edition for Hi-End Munich 2012, sorry for bad quality photo, more to come. Yellow strokes are very expensive dental resins.
Attached Images
File Type: jpg RAKIETA.jpg (75.8 KB, 489 views)
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Last edited by jzagaja; 11th April 2012 at 07:43 AM.
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Old 11th April 2012, 11:04 AM   #1066
raudi is offline raudi  Germany
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Hello jzagaja,
great, wonderful! Is the base solid surface maroon?
Bye raudi
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Old 11th April 2012, 05:29 PM   #1067
jzagaja is offline jzagaja  Poland
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Fiberglass laminate with damping inter layer (paste). After trades we will experiment with solid surface interlayer.
Attached Images
File Type: jpg Praga.jpg (122.7 KB, 454 views)
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Old 11th April 2012, 06:07 PM   #1068
_Wim_ is offline _Wim_  Belgium
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Quote:
Originally Posted by jzagaja View Post
This is a real thing, keep us informed.



Supertweeter still needed?
A few screenshot and pictures of the current status:
- PIC motor en encoder control board finished
- rotary table finished
- positioning works very accurate and fast (PID controlled)
- "scope" function for position routine works also (used to fine tune PID parameters)

What's left:
- program shortcut key's to make it easier to control it from Auto-It script
- adapt Auto-it screen to work with new software and ARTA
- do some code clean-up
- writing some documentation
- testing testing testing...
Attached Images
File Type: jpg IMG_4804.jpg (94.4 KB, 435 views)
File Type: jpg IMG_4806.jpg (85.5 KB, 419 views)
File Type: jpg IMG_4811.jpg (93.1 KB, 92 views)
File Type: jpg IMG_4810.jpg (87.2 KB, 91 views)
File Type: png main screen.png (24.7 KB, 95 views)
File Type: png parameter finetuning.png (54.6 KB, 91 views)
File Type: png parameter setup.png (12.5 KB, 61 views)
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Old 11th April 2012, 06:14 PM   #1069
jzagaja is offline jzagaja  Poland
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Respect
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Old 11th April 2012, 06:20 PM   #1070
gedlee is offline gedlee  United States
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Same here - nice job. Would you sell me one? What kinds of loads will it take? That usually ends up being the problem.

One suggestion. I do not test at equal intervals, its better to have more forward resolution than aft. But typing in the numbers would also be a pain. Could a numerical table be setup where one just clicks a button and it goes to the next value in the table? That coupled with HolmImpulse would be exceptional.

I may even make my polar mapping program available and for the first time in history we could all be looking at very high resolution and accurate polar data that is done the same way and hence comparable.

Last edited by gedlee; 11th April 2012 at 06:24 PM.
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